CN115539710A - Auxiliary installation device for natural gas pipeline connection - Google Patents
Auxiliary installation device for natural gas pipeline connection Download PDFInfo
- Publication number
- CN115539710A CN115539710A CN202211368838.7A CN202211368838A CN115539710A CN 115539710 A CN115539710 A CN 115539710A CN 202211368838 A CN202211368838 A CN 202211368838A CN 115539710 A CN115539710 A CN 115539710A
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- Prior art keywords
- connecting column
- groove
- pipe bracket
- spliced pole
- natural gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/10—Accessories therefor, e.g. anchors for aligning
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses an auxiliary mounting device for natural gas pipeline connection, which comprises a first connecting column mechanism, wherein a second connecting column mechanism is arranged on the inner wall of one end of the first connecting column mechanism, pipe support mechanisms are arranged on the inner walls of the upper ends of the first connecting column mechanism and the second connecting column mechanism, and triangular support frames are fixedly connected to the outer surfaces of the lower ends of the first connecting column mechanism and the second connecting column mechanism. According to the auxiliary mounting device for natural gas pipeline connection, due to the arrangement of the first connecting column mechanism, when the length of a pipeline is too long, the auxiliary mounting device can be easily adjusted, labor is saved, the stability of connection between the first connecting column mechanism and the second connecting column mechanism is improved due to the arrangement of the second connecting column mechanism, and due to the arrangement of the pipe support mechanism, the width of the pipe support can be easily adjusted under the conditions that the width of the pipeline is too long and too short, so that a better use prospect is brought.
Description
Technical Field
The invention relates to the field of pipeline installation, in particular to an auxiliary installation device for natural gas pipeline connection.
Background
Before using the natural gas, must connect the pipeline earlier, avoid appearing the gas leakage accident, natural gas pipe's both ends all can have the nut, wherein one end should be in the same place with the inlet joint position lug connection of water heater, and the sealing washer of nut the inside must be put, and will put correctly, still need screw up the nut simultaneously, thereby avoid appearing gas leakage phenomenon, natural gas pipe is the sectional type connection, connect the equipment by single pipe one by one, and natural gas pipe system is a continuous seal conveying system.
The auxiliary installation device for the connection of the existing natural gas pipeline is installed and used, the natural gas pipeline generally adopts steel, the weight is too heavy, workers can feel hard when connecting the pipeline, the natural gas pipeline is placed correctly before connection, the pipeline and the pipeline are aligned, otherwise, the gas leakage phenomenon easily occurs, certain adverse effects are brought to the use process of people, and therefore the auxiliary installation device for the connection of the natural gas pipeline is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an auxiliary mounting device for natural gas pipeline connection, which has the advantages of firm connection, capability of randomly adjusting the length of a connection structure, capability of adjusting the width of a pipe bracket according to the thickness of a pipeline and the like, and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that: an auxiliary mounting device for natural gas pipeline connection comprises a first connecting column mechanism, wherein a second connecting column mechanism is arranged on the inner wall of one end of the first connecting column mechanism, pipe bracket mechanisms are arranged on the inner walls of the upper ends of the first connecting column mechanism and the second connecting column mechanism, and triangular support frames are fixedly connected to the outer surfaces of the lower ends of the first connecting column mechanism and the second connecting column mechanism;
the first connecting column mechanism comprises a first connecting column body, a first connecting column screw groove, a T-shaped stud, an L-shaped sliding groove, a first connecting column T-shaped groove and a connecting column groove;
the second connecting column mechanism comprises a second connecting column body, a movable column, a limiting block, a handle, a second connecting column screw groove and a second connecting column T-shaped groove;
the pipe bracket mechanism comprises a pipe bracket I, a pipe bracket II, a pipe bracket sliding groove, a pipe bracket convex groove, a pipe bracket groove, a convex groove body screw groove, a spherical stud and a pipe bracket screw groove.
Preferably, a first connecting column T-shaped groove is formed in the outer surface of the upper end of the first connecting column body, a first connecting column screw groove is formed in the outer surface of the front end of the first connecting column body, a T-shaped stud is arranged on the inner wall of the first connecting column screw groove, and a connecting column groove is formed in the outer surface of one side of the first connecting column body.
Preferably, the inner wall of the first connecting column screw groove is fixedly connected with the outer surface of the T-shaped stud through threads.
Preferably, the one end external surface fixed connection of No. two spliced pole shaft has movable post, the one end external surface fixed connection of activity post has the stopper, the one end external surface fixed connection of stopper has the handle.
Preferably, the outer surface of the upper end of the column body of the second connecting column is provided with a T-shaped groove of the second connecting column, and the outer surface of the front end of the movable column is provided with a thread groove of the second connecting column.
Preferably, the inner wall of one end of the first pipe bracket is provided with a second pipe bracket, the outer surface of one end of the first pipe bracket is provided with a pipe bracket sliding groove, the inner wall of the pipe bracket sliding groove is provided with a pipe bracket groove, the outer surface of the front end of the first pipe bracket is provided with a pipe bracket screw groove, and the inner wall of the pipe bracket screw groove is provided with a spherical stud.
Preferably, the outer surface of one side of the second pipe bracket is fixedly connected with a pipe bracket convex groove, and the outer surface of one side of the pipe bracket convex groove is provided with a convex groove body screw groove.
Preferably, the inner wall of one end of the first pipe bracket is movably connected with the outer surface of one end of the second pipe bracket through a pipe bracket sliding groove, and the inner wall of the pipe bracket screw groove is fixedly connected with the outer surface of the spherical stud through threads.
Preferably, the outer fixed surface of the lower end of the pipe bracket mechanism is connected with a pipe bracket connecting column, the outer fixed surface of the lower end of the pipe bracket connecting column is connected with a connecting column stud, the outer surface of the lower end of the pipe bracket connecting column is provided with a base connecting column, the outer surface of the upper end of the base connecting column is provided with a connecting column screw groove, and the outer fixed surface of the lower end of the base connecting column is connected with a sliding base.
Preferably, the outer surface of the lower end of the pipe bracket connecting column is fixedly connected with the outer surface of the upper end of the base connecting column through a connecting column stud and a connecting column thread groove.
Preferably, the inner wall of one end of the first connecting column mechanism is movably connected with the second connecting column mechanism through a connecting column groove, and the inner walls of the upper ends of the first connecting column mechanism and the second connecting column mechanism are movably connected with the outer surface of the lower end of the pipe support mechanism through T-shaped grooves.
Advantageous effects
Compared with the prior art, the invention provides an auxiliary installation device for natural gas pipeline connection, which has the following beneficial effects:
1. this supplementary installation device of natural gas line connection usefulness, through the spliced pole mechanism of setting, let the activity post in No. two spliced pole mechanisms pass through spliced pole recess swing joint in spliced pole mechanism, when meetting the pipeline length overlength, can easily adjust more laborsaving.
2. This supplementary installation device of natural gas line connection usefulness, no. two spliced pole mechanisms through setting up let the stopper fix in spliced pole mechanism No. one, let the handle move about in L type spout, reach the length of adjusting the movable post, and T type double-screw bolt setting has increased the stability of being connected of spliced pole mechanism No. one and No. two spliced pole mechanisms in the inner wall of spliced pole thread groove No. one and No. two spliced pole thread grooves.
3. This supplementary installation device of natural gas line connection usefulness through the conduit saddle mechanism that sets up, is touchhing the condition of pipeline width overlength and short excessively, can promote No. two conduit saddles through the conduit saddle spout of a conduit saddle, adjusts the width of conduit saddle, and spherical double-screw bolt has also played the effect of fixed conduit saddle and No. two conduit saddles.
Drawings
Fig. 1 is a schematic view of the overall structure of an auxiliary installation device for natural gas pipeline connection according to the present invention.
Fig. 2 is a schematic diagram of the overall structure of a pipe bracket mechanism of an auxiliary installation device for natural gas pipeline connection according to the present invention.
Fig. 3 is a connection structure diagram of a second connection column mechanism and a pipe bracket mechanism in the auxiliary installation device for natural gas pipeline connection of the present invention.
Fig. 4 is a schematic overall structural diagram of a second connecting column mechanism in the auxiliary installation device for natural gas pipeline connection according to the present invention.
Fig. 5 is a side exploded view of an auxiliary installation device for a natural gas pipeline connection according to the present invention.
Fig. 6 is a connection structure diagram of a first connection column mechanism and a pipe bracket mechanism in the auxiliary installation device for natural gas pipeline connection of the present invention.
Fig. 7 is a schematic view of a connection structure of a pipe support mechanism in an auxiliary installation device for natural gas pipeline connection according to the present invention.
In the figure: 1. a first connecting column mechanism; 2. a second connecting column mechanism; 3. a pipe bracket mechanism; 4. a triangular support frame; 5. a first pipe bracket; 6. a second pipe bracket; 7. a pipe bracket chute; 8. a pipe bracket convex groove; 9. a pipe bracket groove; 10. a convex groove body screw groove; 11. a ball stud; 12. a pipe support screw groove; 13. a first connecting column body; 14. a first connecting column screw groove; 15. a T-shaped stud; 16. an L-shaped chute; 17. a first connecting column T-shaped groove; 18. a connecting column groove; 19. a second connecting column body; 20. a movable post; 21. a limiting block; 22. a handle; 23. a second connecting column screw groove; 24. a second connecting column T-shaped groove; 25. a pipe bracket connecting column; 26. a sliding base; 27. a base connecting column; 28. connecting a column stud; 29. connecting a column screw groove; .
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
As shown in fig. 1-7, an auxiliary mounting device for natural gas pipeline connection comprises a first connecting column mechanism 1, a second connecting column mechanism 2 is arranged on the inner wall of one end of the first connecting column mechanism 1, pipe support mechanisms 3 are arranged on the inner walls of the upper ends of the first connecting column mechanism 1 and the second connecting column mechanism 2, and triangular support frames 4 are fixedly connected to the outer surfaces of the lower ends of the first connecting column mechanism 1 and the second connecting column mechanism 2; the first connecting column mechanism 1 is characterized in that the first connecting column mechanism 1 comprises a first connecting column body 13, a first connecting column screw groove 14, a T-shaped stud 15, an L-shaped sliding groove 16, a first connecting column T-shaped groove 17 and a connecting column groove 18; the second connecting column mechanism 2 is characterized in that the second connecting column mechanism 2 comprises a second connecting column shaft 19, a movable column 20, a limiting block 21, a handle 22, a second connecting column thread groove 23 and a second connecting column T-shaped groove 24; the pipe bracket mechanism 3 comprises a first pipe bracket 5, a second pipe bracket 6, a pipe bracket sliding groove 7, a pipe bracket convex groove 8, a pipe bracket groove 9, a convex groove body screw groove 10, a spherical stud 11 and a pipe bracket screw groove 12; furthermore, a first connecting column T-shaped groove 17 is formed in the outer surface of the upper end of the first connecting column body 13, a first connecting column screw groove 14 is formed in the outer surface of the front end of the first connecting column body 13, a T-shaped stud 15 is arranged on the inner wall of the first connecting column screw groove 14, and a connecting column groove 18 is formed in the outer surface of one side of the first connecting column body 13, so that the movable column 20 can be pushed easily; the inner wall of the first connecting column screw groove 14 is fixedly connected with the outer surface of the T-shaped stud 15 through threads, so that the first connecting column mechanism 1 and the second connecting column mechanism 2 are more stably fixed; the outer surface of one end of the second connecting column body 19 is fixedly connected with a movable column 20, the outer surface of one end of the movable column 20 is fixedly connected with a limiting block 21, and the outer surface of one end of the limiting block 21 is fixedly connected with a handle 22, so that the whole mechanism is pushed to have a stress point; a second connecting column T-shaped groove 24 is formed in the outer surface of the upper end of the second connecting column body 19, the pipe bracket mechanism (3) is movably connected with the inner wall of the upper end of the second connecting column mechanism (2), and a second connecting column screw groove 23 is formed in the outer surface of the front end of the movable column 20; a second pipe bracket 6 is arranged on the inner wall of one end of the first pipe bracket 5, a pipe bracket sliding groove 7 is formed in the outer surface of one end of the first pipe bracket 5, a pipe bracket groove 9 is formed in the inner wall of the pipe bracket sliding groove 7, a pipe bracket screw groove 12 is formed in the outer surface of the front end of the first pipe bracket 5, and a spherical stud 11 is arranged on the inner wall of the pipe bracket screw groove 12, so that the connection between the first pipe bracket 5 and the second pipe bracket 6 is more stable; a pipe bracket convex groove 8 is fixedly connected to the outer surface of one side of the second pipe bracket 6, so that the second pipe bracket 6 can move on the inner wall of the first pipe bracket 5, and a convex groove body screw groove 10 is formed in the outer surface of one side of the pipe bracket convex groove 8; the inner wall of one end of the first pipe bracket 5 is movably connected with the outer surface of one end of the second pipe bracket 6 through a pipe bracket sliding groove 7, so that the second pipe bracket 6 can be pulled more conveniently, and the inner wall of a pipe bracket screw groove 12 is fixedly connected with the outer surface of a spherical stud 11 through threads; a pipe bracket connecting column 25 is fixedly connected to the outer surface of the lower end of the pipe bracket mechanism 3, a connecting column stud 28 is fixedly connected to the outer surface of the lower end of the pipe bracket connecting column 25, a base connecting column 27 is arranged on the outer surface of the lower end of the pipe bracket connecting column 25, a connecting column screw groove 29 is formed in the outer surface of the upper end of the base connecting column 27, a sliding base 26 is fixedly connected to the outer surface of the lower end of the base connecting column 27, and the pipe bracket mechanism 3 can move easily in the inner walls of the upper ends of the first connecting column mechanism 1 and the second connecting column mechanism 2; the outer surface of the lower end of the pipe bracket connecting column 25 is fixedly connected with the outer surface of the upper end of the base connecting column 27 through a connecting column stud 28 and a connecting column screw groove 29, so that the pipe bracket mechanism 3 is more convenient to disassemble; the inner wall of one end of the first connecting column mechanism 1 is movably connected with the second connecting column mechanism 2 through the connecting column groove 18, the inner walls of the upper ends of the first connecting column mechanism 1 and the second connecting column mechanism 2 are movably connected with the outer surface of the lower end of the pipe support mechanism 3 through the T-shaped groove, and the width of the pipe support can be adjusted when the pipe width is too long and too short.
Principle of operation
The invention relates to an auxiliary mounting device for natural gas pipeline connection, when in use, natural gas pipelines at two ends are fixed through a first connecting column mechanism and a pipe bracket mechanism 3 on a second connecting column mechanism 2, a triangular support frame 4 fixed at the lower ends of the first connecting column mechanism 1 and the second connecting column mechanism 2 supports the whole auxiliary mounting device, when the pipeline length is too long, the auxiliary mounting device can be easily adjusted, and is labor-saving, a movable column 20 in the second connecting column mechanism 2 is movably connected in the first connecting column mechanism 1 through a connecting column groove 18, a limiting block 21 is fixed in the first connecting column mechanism 1, a handle 22 is movable in an L-shaped sliding groove 16 to adjust the length of the movable column 20, a T-shaped stud 15 is arranged in the inner walls of a first connecting column screw groove 14 and a second connecting column screw groove 23, the stability of connection between the first connecting column mechanism 1 and the second connecting column mechanism 2 is improved, and under the condition of too long and too short pipeline width, a pipe bracket 6 can be pushed through a pipe bracket 7 of the first pipe bracket 5 to adjust the width of a pipe bracket, and a spherical pipe bracket 11 also plays a role of fixing the second pipe bracket 6.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an auxiliary installation device of natural gas line connection usefulness, includes a spliced pole mechanism (1), its characterized in that: a second connecting column mechanism (2) is arranged on the inner wall of one end of the first connecting column mechanism (1), pipe bracket mechanisms (3) are arranged on the inner walls of the upper ends of the first connecting column mechanism (1) and the second connecting column mechanism (2), and triangular support frames (4) are fixedly connected to the outer surfaces of the lower ends of the first connecting column mechanism (1) and the second connecting column mechanism (2);
the first connecting column mechanism (1), wherein the first connecting column mechanism (1) comprises a first connecting column body (13), a first connecting column screw groove (14), a T-shaped stud (15), an L-shaped sliding groove (16), a first connecting column T-shaped groove (17) and a connecting column groove (18);
the second connecting column mechanism (2), wherein the second connecting column mechanism (2) comprises a second connecting column body (19), a movable column (20), a limiting block (21), a handle (22), a second connecting column thread groove (23) and a second connecting column T-shaped groove (24);
the pipe bracket mechanism (3) comprises a pipe bracket (5), a second pipe bracket (6), a pipe bracket sliding groove (7), a pipe bracket convex groove (8), a pipe bracket groove (9), a convex groove body spiral groove (10), a spherical stud (11) and a pipe bracket spiral groove (12).
2. An auxiliary installation device for a natural gas pipeline connection according to claim 1, wherein: a spliced pole T type recess (17) has been seted up to the upper end surface of spliced pole shaft (13), spliced pole thread groove (14) have been seted up to the front end surface of spliced pole shaft (13), the inner wall of spliced pole thread groove (14) is provided with T type double-screw bolt (15), spliced pole recess (18) have been seted up to one side surface of spliced pole shaft (13).
3. An auxiliary installation device for a natural gas pipeline connection according to claim 2, wherein: the inner wall of the first connecting column thread groove (14) is fixedly connected with the outer surface of the T-shaped stud (15) through threads.
4. An auxiliary installation device for a natural gas pipeline connection according to claim 3, wherein: no. two one end external surface fixed connection of spliced pole shaft (19) has movable post (20), the one end external surface fixed connection of activity post (20) has stopper (21), the one end external surface fixed connection of stopper (21) has handle (22).
5. An auxiliary installation device for natural gas pipeline connection according to claim 4, wherein: the outer surface of the upper end of the second connecting column body (19) is provided with a second connecting column T-shaped groove (24), and the outer surface of the front end of the movable column (20) is provided with a second connecting column screw groove (23).
6. An auxiliary installation device for a natural gas pipeline connection according to claim 5, wherein: the one end inner wall of a conduit saddle (5) is provided with No. two conduit saddles (6), conduit saddle spout (7) have been seted up to the one end surface of a conduit saddle (5), conduit saddle recess (9) have been seted up to the inner wall of conduit saddle spout (7), conduit saddle spiral groove (12) have been seted up to the front end surface of a conduit saddle (5), the inner wall of conduit saddle spiral groove (12) is provided with spherical double-screw bolt (11).
7. An auxiliary installation device for natural gas pipeline connection according to claim 6, wherein: a pipe bracket convex groove (8) is fixedly connected to the outer surface of one side of the second pipe bracket (6), and a convex groove body spiral groove (10) is formed in the outer surface of one side of the pipe bracket convex groove (8).
8. An auxiliary installation device for natural gas pipeline connection according to claim 7, wherein: the inner wall of one end of the first pipe support (5) is movably connected with the outer surface of one end of the second pipe support (6) through a pipe support sliding groove (7), and the inner wall of the pipe support screw groove (12) is fixedly connected with the outer surface of the spherical stud (11) through threads.
9. An auxiliary installation device for a natural gas pipeline connection according to claim 8, wherein: the pipe bracket is characterized in that a pipe bracket connecting column (25) is fixedly connected to the outer surface of the lower end of the pipe bracket mechanism (3), a connecting column stud (28) is fixedly connected to the outer surface of the lower end of the pipe bracket connecting column (25), a base connecting column (27) is arranged on the outer surface of the lower end of the pipe bracket connecting column (25), a connecting column screw groove (29) is formed in the outer surface of the upper end of the base connecting column (27), and a sliding base (26) is fixedly connected to the outer surface of the lower end of the base connecting column (27).
10. An auxiliary installation device for a natural gas pipeline connection according to claim 9, wherein: the lower extreme surface of conduit saddle spliced pole (25) passes through spliced pole double-screw bolt (28) and spliced pole thread groove (29) and the upper end external surface fixed connection of base spliced pole (27), the one end inner wall of spliced pole mechanism (1) passes through spliced pole recess (18) and No. two spliced pole mechanism (2) swing joint, the upper end inner wall of spliced pole mechanism (1) and No. two spliced pole mechanisms (2) all passes through the lower extreme surface swing joint of T type recess and conduit saddle mechanism (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368838.7A CN115539710A (en) | 2022-11-03 | 2022-11-03 | Auxiliary installation device for natural gas pipeline connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368838.7A CN115539710A (en) | 2022-11-03 | 2022-11-03 | Auxiliary installation device for natural gas pipeline connection |
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| Publication Number | Publication Date |
|---|---|
| CN115539710A true CN115539710A (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211368838.7A Pending CN115539710A (en) | 2022-11-03 | 2022-11-03 | Auxiliary installation device for natural gas pipeline connection |
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| CN (1) | CN115539710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117646829A (en) * | 2024-01-29 | 2024-03-05 | 山西国强天然气输配有限公司 | Natural gas pipeline installation auxiliary device |
-
2022
- 2022-11-03 CN CN202211368838.7A patent/CN115539710A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117646829A (en) * | 2024-01-29 | 2024-03-05 | 山西国强天然气输配有限公司 | Natural gas pipeline installation auxiliary device |
| CN117646829B (en) * | 2024-01-29 | 2024-04-19 | 山西国强天然气输配有限公司 | Natural gas pipeline installation auxiliary device |
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